How to Install Hydraulics on a Car

 

Step 1. Put the car up on a lift because you don't want to install … on a car without one. If you don't have one, borrow a garage lift to make the job much easier.

 

Step 2. Remove the pedal assembly, the booster, then the…. In most cases, there is a clip that holds the pedal assembly to the ….

 

Step 3. Replace the brake lines with new and remove the … that are no longer attached to the old discs. Remove the distribution block after you have disconnected the line that feeds the rear ….

 

 

Step 4. Install a new booster, master cylinder and …. Follow the manufacturer's directions and make sure the part is compatible with your …, model and year of car. Clip the new booster to the … using the same clip. Install a "T" fitting to evenly distribute the … to both front brakes.

 

Step 5. Hook the lines up to the calipers, the "T" the master cylinder, the distribution box and the rear breaks. Check all … and bleed the brakes after …. Have a buddy inspect your work because with all those lines, it's easy to miss one.

 

(from http://www.ehow.com/how_2190925_install-hydraulicscar.html)

 

 

· Make up a dialogue. A – is a newly-born mechanic who has just come to his work. B – is a professional mechanic who is giving his master-class and is trying to answer all the questions of the young but inexperienced specialist.

 

 

· Insert the necessary special words and auxiliary verbs to form the following special questions:

1. … … some carmakers begin to use diagonally split systems?

2. … happens when hydraulic force applies pressure through the wheel cylinders and calipers?

3..... all of today's cars … required to use some type of hydraulically split system?

 

· Translate from English into Russian without the dictionary:

1. Most brake systems multiply the force in the process.

2. Force applied at one point is transmitted to another point using an incompressible fluid.

3. The pedal is designed in such a way that it can multiply the force from your leg several times before any force is even transmitted to the brake fluid.

4. Changing the relative lengths of the left and right ends of the lever changes the multipliers.

5. If you apply a downward force to one piston, then the force is transmitted to the second piston through the oil in the pipe.

6. The great thing about hydraulic systems is that the pipe connecting the two cylinders can be any length and shape, allowing it to snake through all sorts of things separating the two pistons.

7. The pipe can also fork, so that one master cylinder can drive more than one slave cylinder if desired.

8. Since oil is incompressible, the efficiency is very good – almost all of the applied force appears at the second piston.

9. In a hydraulic system, all you have to do is change the size of one piston and cylinder relative to the other.

(with the help of http://auto.howstuffworks.com/brake1.htm)

 

 

· Insert the terms into the text using your active vocabulary. Have you found anything new about the hydraulic brake system?

The hydraulic … system consists of the master …, disc … calipers (disc brakes), … cylinders (drum brakes), … lines and hoses, and combination/proportioning valve. When you push on the brake …, the force of your leg generates hydraulic … in the master cylinder, which then flows through the hydraulic lines and … to the wheel cylinders and calipers. The … force applies pressure through the wheel cylinders and calipers, forcing the shoes against the … (drum brakes) and the pads against the rotors (disc brakes). In the early 1960's, cars began using split … systems and tandem … cylinders. Essentially, this divided the hydraulic system into two separate systems (front and back), ensuring proper hydraulic and braking on one side of the system, if a leak developed on the other side. In the 1980's, some carmakers began to use diagonally split systems, which took safety a step further. Instead of splitting the system into front and …, the system was now hydraulically divided into left-rear/right-front and right-rear/left-front. By maintaining one front and one rear …, the result is more balanced braking when the system develops a leak. By law, all of today's cars are required to use some type of hydraulically split system.

The hydraulic system transmits and multiples force as needed to provide braking action throughout the brake system.

(from http://www.carcare.org/Brakes/hydraulics.shtml)

 

 

· Imagine that you are a hydraulics specialist who was asked to explain the hydraulic multiplication. Read the text quickly and then translate it remembering about the special intonation. Then give a brief explanation of the hydraulic multiplication without the help of the text.

To determine the multiplication factor in the figure above, start by looking at the size of the pistons. Assume that the piston on the left is 2 inches (5.08 cm) in diameter (1-inch / 2.54 cm radius), while the piston on the right is 6 inches (15.24 cm) in diameter (3-inch / 7.62 cm radius). The area of the two pistons is Pi * r2. The area of the left piston is therefore 3.14, while the area of the piston on the right is 28.26. The piston on the right is nine times larger than the piston on the left. This means that any force applied to the left-hand piston will come out nine times greater on the right-hand piston. So, if you apply a 100-pound downward force to the left piston, a 900-pound upward force will appear on the right. The only catch is that you will have to depress the left piston 9 inches (22.86 cm) to raise the right piston 1 inch (2.54 cm).

(from http://auto.howstuffworks.com/brake1.htm)

 

Unit 2